Reading lamp



l 46@ 727 Sept. 25 1923. MULLARD ET AL As READING LAMP Filed aune" 17. 192m .fzyn 11/` 1/ 14 iA 1f 11/cb l /v I v10@ g o @10 0 9@ 16 y 13 15,15% @yan l 1.9 6' 1 '5 5 1 EA i r .1927. 2. 9 1J 17 f #6774 gf Patented Sept. 25, 1923.

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EUGENE MULLARD, LAURENT vALENDUoe, AND JEAN DuBois, or PARIS, FRANCE.

" READING Laivrr;

Application filed June 1'?, 1920. Serial No. 389,753.

(GRANTED UNDER THE PROVISIONSF THE ACT F MARCH 3, 1921, 41 STAT. L., 1313.)

To all whom t `may concern:

Be it known that we, EUGENE MULLARD, LAURENT VALENDUCQ, Vand JEAN DUBOIS, citizens of the Republic of France,residing all three at Paris, 64 'Rue Amelot, in the Republic of France, have invented certain new and useful improvements in Reading' Lamps (for which we have liled an application in France on May V30, 1914, Patent No. 472,835), of which the following is a speciiication. v

This invention relates to an electric lighting apparatus` knownV as reading lamp which is chieliy designed for use in railroad wagons and ocean Steamers.

in this apparatus, the'lamp is constantly' inclosed and is .protected `at least upon the major part oi" its peripheryby a protecting casing, and islighted and' extinguished by the opening and closing movements of a portion o the said casing.

VThe accompanying drawings show by way of example two constructional iforms oi lighting apparatus according to thisinven-v tion. Y

Fig. 1 is a iront elevation of one toi-m of the apparatus or reading lamp, with the casing and the Shutter removed.

Fig. 2 is a horizontal secti with the rshutter closed. y

Fig. 3 is a cross-sectionV along the line A-A of Fig. 1.

Fig. 4 is a rear elevation ofthe second form oi' the device.

Fig. 5 is side elevation of the same,in the open position. Y Fig. 6 is a cross-section along the line B-B of Fig. 4, the device being'in the closed position.

The apparatus represented in VFigures 1 to 3 inclusive comprises a casing or frame l on ofl the saine,

closed by a fixed cover 2.which contains an opening 3 in order to receive a swinging shutter 4., The lamp 5l is of cylindrical shape and is provided with the circular contacts 6 at its ends; this lamp is pressed by means of two lat springs 7 and 7a upon two fixed to the vertical bottom part of the casing'by means of the screws 10. @ne oi' these springs is iXed to its respective piece 9 by a bolt whose nut 11 serves as a terminal for receiving one of the line wires. The other spring is held by the bolt 11a which is electrically connected by a wire 11b to a strap 13CL mounted on one end o1c the piece 9. The second line wire is received by a terminal 14 screwed upon a strap 13 similar to the strap 13a and attached to the corresponding end ot the piece 9. Each oiI the members 13 and 13a supports by means of lugs'a vertical shaft or pin 15, upon which a contact piece 16 or 16a is adaptedL to swing, this piece being submitted to the action ci' the spring 17.

The protecting shutter 4 provided with the two lugs 18 is adapted to swing about the shattsor pins 19 mounted on the walls of the casing 1. Une of these lugs 18 cai ries flattened portions adapted to receive the pressure of the lever which is articulated vupon one side of the casing and is submitted to the action of the spring 21, these flattened parts being so disposed that the shutter shall be held in its two extreme poA sitions by the pressure of the levers 20, or in the open or closed position, as indicated by the dotted line in F ig. 3.

The shutter 4 carries attached thereto an insulating piece 27 upon which is mounted the insulated contact piece 22 designed to make connection between the pieces 16 and 16, in the open position of the shutter. rlhe swing of each oi' these latter pieces is limited in either direction by means of suitable stop pieces. v

TWith the lamp mounted in position under the springs 7 and 7 a, the opening of the shut ter has the effect of engaging the member 22 between the pieces 16 and 16", and in consequence the current will now pass by way or n, 7, 5, 7e, na 16322, i6, ia and i4.. The lamp will thus be lighted at the same time that it is uncovered by the shutter.

inversely, when the shutter is closed. the member 2:2 comes out from between the pieces 16 and 16a, and the lamp is thereupon extinguished as well as closed up. The iiember 22 carries with it in its backward movement the pieces 16 and 16d up to a cer tain point, anc` then releases them when the latter are arrested by their stop pieces; whereupon the springs 17 Will snap back the pieces le and 1G, thus avoidingthe injurious effect oit sparking at the contact, so that currents of any voltage can'bc used.

The renin e? to G diAA -s essentially from the foregoing in the t; :.1 that the lamp is now contained a swinging protecting casing 4t which acts 'at the Sametime as a reflector and also serves as a shutter to close the opening in the trame la, instead ot having the Alamp mounted in iixed position inthe casing` l;

the lamp is constant-l57 protected, at leastV Vupon the greater part ot its periphery, and Vis lio'hted and extinguished by the movenientof one ot the protecting members, in the present case the swinging movement et' the casing da.

The casing Llconsists ot' an open boxshaped Vmember "mounted by means otl the journals 19 upon the lugs of a fixed frame l". The two spring clamps 7b and 7c are attached to the bottom ot' the said casing in such manner as to be insulated therefrom, by means of the insulating b-locks 8f. These A `taeliinent bolts.

clamps are so disposed that the axis of the lan'ip held therein shall coincide approxi- `mrdely with the axis ot' the journals 19"'.

The line wires are received vby two terminals 14D and 14 which are attached by means ot the vinsulating pieces 23 'to 'the lugs of the traine 1a; each oi thev said terminals isprovided with a ixed arm 13b or 13C having swinging thereon a contact meinber 1Gb or 16C which is acted upon by the spring 17". When the casing is inclined (Fig. 5), the inen'ibers v16b or 16c are caused to bear upon the Contact members 11b and 11, which are attached to the bottom of the casing in such manner as to be insulated therefrom, and which are connected to the spring clamps '7b and 7C through their at- Upon inclining the casingl La as shown in Vig. 5, the members 11b and 1lc will make Vcontact with the members 16h and 16,

whereiuon the current will pass by way ot rib, in, ich, n, 5, 7c, icc, iic and ir, and

the lamp will now be lighted. When the casing is brought into the upright position,

the members 11b and 11c will be separated 'from the members 1Gb, and 1G, and the lamp will be extinguishedV and closed up at the same time. In this movement the first nientioned members will draw along the swinging members 161 and 16 in the first place, and will Athen release them and snap back under the effect ot the springs, thus avoiding all sparking at the contacts. Y

` The casing; 4f is held in its two end positions thi'ough the pressure ot a lever 20 which is articulated upon a lug on the frame l and is acted upon by the springs 21a, the

lamp represented in l-"igurcs` bulb supported by saidv trame in the `rear of said aperture, the axis ofsaid bu'lbbeing horizontal, a shutter serving'to -close said `adapted to be securedto a partition andV Y provided with an opening, an electric lamp apertu.re, the said shutter pivoting upon an axisadjacent the axis of said bulb, and a quick-break device for, electric current comprising a contact with rocking Velements secured to said frame, springs fori eifecting the rapid rocking`movement of said ele-f ments duringthe closingfof said aperture,

a Contact member disposed' upon said shut- Y.

ter and adapted to engage'said rocking ele'- ments, and means for electrical connection between said lamp members. V2. In

a stationary supporting member-,a swinging casing pivoted upon the said supporting member, spring clamps xed within the said casing, an incandescent' lamp' having upon the ends thereof electric. contact Y rings adapted for insertion into the said clamps,

the pivot shaft of thesaid casing and the axis of thek lamp being located in proximityVV to each other,- and contact'V means disposed upon Vthersupporting member and 'upon the casing, the said means beingadapted for opening and closing the circuit of thelamp Ybulbiand said contact anY electric i lightingY :apparatus known asreading lamp, thecombin'ation of 195 according to the direction in whichthe said casin shall be rotated.`

' n an electric lightingapparatus known as reading lamp, the combinationot a fixed support, a swinging casing pivoted upon the said support,` an incandescent lamp Y xed Within the said casing, a: projection upon the said casing, a spring-actuated'lever.

articulated upon the said-support, and a roller pivoted on the said lever andadapted Y for the purpose set forth. v

4. In an electric lighting apparatus known as readinglamp, the 'combination of to engage to said projection ofV the-casing a fixed support, a swinging casing pivoted Y upon the said support, twofspring clampsy ixed Within thef said casing, an incandescent lamp whose ends areinserted into the said clamps, insulating blocks disposed upon the said supporting member, electric terminal pieces mounted upon the said blocks, forked contact members 'pivoted upon the said terminal pieces, springs for maintaining `the said Contact pieces in the inoperative position, and Contact members disposed upon the said swinging casing, these latttei` members being` connected to the said clamps and adapted for insertion into the said forked Contact members when the swinging casing is rotated in a oertain direction.

In testimony that We claim the foregoing as our invention, we have signed our names in presence of a subscribing Witness.

EUGNE MULLARD. LAURENT VALENDUCQ. JEAN DUBOIS.

Witness:

MAURICE ROME. 

